Math, asked by veerdavinder605, 9 months ago

3. (1) Prove that (cos x - cos y)2 + (sin x - sin y)2 = 4 sin2 (x-y/2)

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Answered by Shurjeel2002

2

Answer:

Step-by-step explanation:

There You Go!!!

SHIFA

SHURJEEL

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